Stairway tread edge



FIG. 1 is a back elevational view of the stairway tread edge showing mynew design;

FIG. 2 is a front elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is a right end view based on FIG. 1; and,

FIG. 6 is a left end view based on FIG. 1.

The stairway tread edge is broken on the ends indicating indefinitelength.

The ornamental design for a stairway tread edge, as shown and described.